After got the 1-wire stuff working it is time to use the temperature probes to get some use of measuring your environment. This article describe how you can create an op5 Monitor or Nagios plugin to monitor your temperatures.

I found a 1-wire temperature Nagios plugin on internet, but it had some disadvantages:

Used Fahrenheit instead of Celsius

Did not accept thresholds below zero degrees, in Sweden that is quite common temperature during winter.

Strange License, it just said Copyright and a name and email address that bounced.

The Nagios plugin was written in Perl so it was straight forward to modify and fix the obstacles I found. But the copyright bothered me because I wanted to publish the changes, I tried to email the email address I found in the script but it bounced, so I decided to write my own plugin.